On Fri, Sep 28, 2007 at 05:07:47PM +0200, Stephan A. Rickauer wrote:
> On Fri, Sep 28, 2007 at 08:35:10AM +1000, David Gwynne wrote:
>>
>> On 27/09/2007, at 8:06 PM, Stephan A. Rickauer wrote:
>>
>>> A new server shippped by a local vendor fails to boot bsd.mp, with and 
>>> without acpi enabled (amd64, 4.2). Without acpi it will reboot directly 
>>> after mounting the root device. With acpi enabled it will hang with 
>>> "arc0: unable to query firmware for sensor info". Uniprocessor kernels 
>>> would boot fine, both acpi and without. Pls. find dmesgs of those as well 
>>> as more info below.
>>
>> I'm pretty sure that message from arc is a result of interrupts not being 
>> hooked up correctly.
>>
>> also, arc doesnt hang after printing that message, it gives control back 
>> to the rest of the kernel. presumably the kernel is hanging while waiting 
>> for io on the disk to work, but of course, the disk is on arc and 
>> interrupts arent wired up to it correctly so just blocks.
>>
>> dlg
>
> I see. However, only bsd.mp hangs, bsd boots fine. Is there anything else I 
> can try?
>
> Stephan

enable acpi so the interrupt routing in the MP case can be fixed up,
broken MP BIOSes are sadly reasonably common now.

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